The index closed 43.73 points higher after losing 12.14 points on Thursday.
Trading on the Ho Chi Minh Stock Exchange (HoSE) fell by 17.90% to VND17.92 trillion ($735.48 million).
The VN-30 basket saw all 30 tickers gain.
Eight blue chips closed at ceiling price, including KDH of real estate firm Khang Dien House, VIB of Vietnam International Commercial Bank and CTG of state-owned lender VietinBank with a 7% rise.
Other major gainers included MWG of electronics retail chain Mobile World, up 6.7%, and VCB of state-owned lender Vietcombank, up 6.3%.
Foreign investors were net buyers for the 10th straight session to the tune of VND2.17 trillion, mainly buying HPG of steelmaker Hoa Phat Group and VHM of property giant Vinhomes.
The HNX-Index at the Hanoi Stock Exchange, where mid and small caps list, was up 2.35% while the UPCoM-Index at the Unlisted Public Companies Market was up by 1.12%.